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UIA performance/WinDbg: slow response when pressing Alt+Tab after pressing Control+D from WinDbg #8535
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@josephsl is this issue still reproducible? There are to PRs merged related to this and I guess there were changes between Windows 10 1803 and las build in 1809. |
Hi, the person you should talk to would be @tspivey, as he is the one who have tested this fix, too. Thanks.
From: Adriani90 <notifications@github.com>
Sent: Saturday, January 12, 2019 4:46 AM
To: nvaccess/nvda <nvda@noreply.github.com>
Cc: Joseph Lee <joseph.lee22590@gmail.com>; Mention <mention@noreply.github.com>
Subject: Re: [nvaccess/nvda] UIA performance/WinDbg: slow response when pressing Alt+Tab after pressing Control+D from WinDbg (#8535)
@josephsl <https://github.com/josephsl> is this issue still reproducible? There are to PRs merged related to this and I guess there were changes between Windows 10 1803 and las build in 1809.
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@@tspivey are you still having this issue? Or should we close it? |
Adriani90
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Jan 19, 2020
No updates so far from the person who can reproduce it. I am closing this issue as abandoned. Please comment on it if you still have this issue and we can reopen it. Thanks. |
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Labels
Abandoned
requested reports or updates are missing since more than 1 year, author or users are not available.
Hi,
Reported by @tspivey via Skype: UIA responds slowly when pressing Alt+Tab from WinDbg.
Steps to reproduce:
Actual behavior:
Switching between apps is very slow.
Expected behavior:
Switching between apps is snappy.
System configuration:
NVDA Installed/portable/running from source:
Installed
NVDA version:
2018.2.1 and alpha.15634
Windows version:
Windows 10 versions 1803 and Insider Preview
Name and version of other software in use when reproducing the issue:
WinDbg
Other information about your system:
@tspivey uses version 1803, while I use Insider Preview.
Other questions:
Does the issue still occur after restarting your PC?
Yes
Have you tried any other versions of NVDA?
No
Technical:
Possibly caused by WinDbg itself.
Workarounds:
For Version 1803 (build 17134), remove UIA name and value properties from properties to event ID's dictionary in UIA handler. This resolves this, although it raises the question as to which window is causing performance issues when firing name change and/or value change events.
In Insider Preview, use IUIAutomation6::CoalesceEvents (RS5, the flag must be set to 1/enabled).
Thanks.
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